Prototype Description:
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, 4-4-0 represents the arrangement of four leading wheels on two axles, usually in a leading bogie, four powered and coupled driving wheels on two axles, and no trailing wheels. Almost every major railroad that operated in North America in the first half of the 19th century owned and operated locomotives of this type. Due to the large number of the type that were produced and used in the United States, the 4-4-0 is most commonly known as the American type, but the type subsequently became popular in the United Kingdom, where large numbers were produced.

Five years after new locomotive construction had begun at the West Point Foundry in the US with the 0-4-0 Best Friend of Charleston in 1831, the first 4-4-0 locomotive was designed by Henry R. Campbell, at the time the chief engineer for the Philadelphia, Germantown and Norristown Railway. Campbell received a patent for the design in February 1836 and soon set to work building the first 4-4-0.

The design and subsequent improvements of the 4-4-0 configuration proved so successful that, by 1872, 60% of Baldwin's locomotive construction was of this type and it is estimated that 85% of all locomotives in operation in the US were 4-4-0s. However, the 4-4-0 was soon supplanted by bigger designs, like the 2-6-0 and 2-8-0, even though the 4-4-0 wheel arrangement was still favored for express services. The widespread adoption of the 4-6-0 and larger locomotives eventually helped seal its fate as a product of the past.

The Missouri-Kansas-Texas Railroad (reporting mark MKT) is a former Class I railroad company in the United States, with its last headquarters in Dallas. Established in 1865 under the name Union Pacific Railway, Southern Branch, it came to serve an extensive rail network in Texas, Oklahoma, Kansas, and Missouri. In 1988, it merged with the Missouri Pacific Railroad and is now part of Union Pacific Railroad.

In its earliest days the MKT was commonly referred to as "the K-T", which was its stock exchange symbol; this common designation soon evolved into "the Katy".

The Katy was the first railroad to enter Texas from the north through Denison, Texas. Eventually the Katy's core system would grow to link Parsons, Fort Scott, Junction City, Olathe, and Kansas City, Kansas; Kansas City, Joplin, Jefferson City, and St. Louis, Missouri; Tulsa and Oklahoma City, Oklahoma; Dallas, Fort Worth, Waco, Temple, Austin, San Antonio, Houston, and Galveston, Texas. An additional mainline between Fort Worth and Salina, Kansas, was added in the 1980s after the collapse of the Chicago, Rock Island and Pacific Railroad; this line was operated as the Oklahoma, Kansas and Texas Railroad (OKKT).

At the end of 1970, MKT operated 2623 miles of road and 3765 miles of track.

Founded in the late 1960's by Michael Tager, the 3rd generation business specializes in quality hobby products serving the toy and hobby markets worldwide. During its 50 years of operation, Model Power has developed a full line of model railroading products, die-cast metal aircraft, and die-cast metal cars and trucks.

In early 2014, Model Power ceased its business operations. Its extensive portfolio of intellectual property and physical assets are now exclusively produced, marketed, sold, and distributed by MRC (Model Power, MetalTrain and Mantua)
and by Daron (Postage Stamp Airplanes and Airliner Collection).